Mold construction for concrete walls.



J. MUBLLER.

MOLD UONSTRUGTON FOR CONCRETE WALLS.

APFLIUATIDN FILED JUNE 25 Patented ct. 12, 1909.

UNITED STATES 'PATENT OFFICE.

specification of :einen retest.

Patented ooe. i2', 1909.

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To wimmitmay consum.'

Beit known that I, Jenn Munchen, a. citizen of the' United' States ofAmerica, and a resident of Elmhurst, county of Dupage,

o Stute;v of Illinois, have' invented certain new 1o provide an improvedconstruction for moms ing to this invention.

suitable for use ini the erection of concretewalls and the like, whichis simple, eiiicient' and economical, and in which the lumber which isto be afterward used in the building .i muy be utilized as mold materialwithout being cut or otherwise damaged, and to provide a construct-ionwherein the mold will require few parte and permit of successivelyadvanc. ingthese-as the work progresses, and wherein the ry uipmentshall consist of parts which are o simple and inexpensive constructionand of such size and shape as' to be durable and not likel, to becomelon.. These objects are uecomp edby the construction shown in theaccompanying drawiu in whichigure 1 is a sectional perspective view of adouble concrete wall in the process of construction. the mold beiconstructed accordi 2 is a transverse section of the same on the ine 2-2of Fig. 1, showing the moldadvanced preparatory to bnildi an additionalsection upon the wall. Fig. 3 1s a :1I-tial plan view of one of thecross bars, owing the relative position of the rod and the enlargederforation, and also showing the scoring of t e bar for breaking oil theprojecting end when the wall is completed. Fig. 4- is a side view of thesame. l'n the construction shown in the drawing', the mold sections orforms 1 are retained in a substantially vertical position by verticallydisposed treme members referably in the form of roundY rods 2 whichextend down wnrdly through the erforntions in the cross bars or binders3. e rods 2 ure bent at the upper end toward one side, so as to provideheads by which the rods muy be pulled or driven upward. The erforationsin the bars 3 are made lm er in inmeter than the rods 2, as shown in t eFi 3 und 4, in order that the hars 3 may be easily passed down over thebent upper ends of the rods 2 without necessitating the removal of sume.

In sin le wall construction the burs 3 are plain en can be removed fromthe wall, if

desired, beforetle concrete' has fully bei denied.. IIx-doublewelconstruetion the bars' shave yrfonaltiens'intermediate of 'the endsinto' whicli the concrete enters and holds the hers 3 ruilyin? the moladapting them to serve es binders the ls'cnw..dls. The ba'rs 3 are alsoScored et 5i at' the outer faces' l of the walls toall'ow; the proectingends te he' broken In'- doule; wel] cf-second set of rodsev'vfhicomaybe' come what shorter than therod 2, entend through jperforations-inthe' bers and hold the'inn'er mold sections 9' in4 position for gagingthe space between the two wells.

e The building of a wall b means of this construction is as follows efooting 8 of the wall is rst constructed. Then a series of cross bars'3are laid u on the footing 8, and the first rows of mol sections 1 and 9are placed onedge on thebers 3. A second series of cross bars 3i areplaced on the top` edge of thev mold sections directly above those inthe iirst series. The rods 2 and 6 are then inserted into theperforations, so esh to connect the cross bars and secure the moldsections against beV spread a art' when the concrete is-lled in; eboa 1-and-9 may beV tem 'rarily held apart by transverse braces lnot shown),but these areV usually unnecessa after the irst course is completed. T econcrete is then filled in between the boards. After the first course ofconcrete suiliciently set, the up r set of cross bars 3 is removed topermit t e boards 9 to be taken out. Then said upper set of crossbars-is replaced, and the second section of the mold is set up in thesame way, the cross bars 3' being' simply passed over the heads of therods 2. The concrete for each course4 is-lled i-n before the mold forthe succeedingeourse is erected. This-operation 1s' continued' until themold has reached the tops of the 7rods-2. The next cou-rse of the moldis-then erected by drawing the rods 2 upwordl' the length of onesection, removing the oarcls l of the lowest section, and plecin them onthe bers 3 above the boards 1 of t e course 'ust completed. The bers 3are then pass down over the rods 2 as before, und the section is reudvto be filled with concrete. The operation t en contlnues as before,until the wall reaches the. deslred height, the mold being advanced wltheach successive course. It 1s preferred to merely lay the cross barsncl-oss the edges of the boards, without cutting them, as this permitsIn single wall construction the boards 9 and rods 6 are omtted,andthe-barsj are made without intermediate perforations 4, so that they maybe pulled out of the wall before it has fully set. In double wallconstruction the bars 3 bind together the two walls. The sco 5 permitsthe projectin ends to be broken o close to the wall. 1e fact that therods 2 extend across several courses of.

the mold insures that the additions to the mold ma be easily kept invertical alinement wi the sections below.

What I claim as my invention and desire to secure by Letters Patentisz- 1. In a mold, the combination of a plurality of mold sections dedone above the other cross bars exten thro li the mold and projectingontw 4beyon said mold sections, verticali members each adapted tocoperate with the projecting parts of a lurality of successive crossbars so as to h the mold sections in position, said members beingadapted to be slid u wardly while in operative relation with e uppercross bars to permit the lowest mold section to be removed and placedabove for advancing the mold without disturbing the intermediate moldsections, and means on said members whereby they may be pulled upwardly.

2. In a mold, the combination of a pluraIity of mold sections osed oneabove theother,crossbarsexten ngthro hthe mold and projecting outwabeyon said mold sections and having perforations adjacent to the outerfaces o said sections, rods extending downwardly through saidpeiforations from one cross bar to another and adapted to hold saidsections in osition, the upper ends of said rods being nt toward oneside tlolprovide heads whereby said rods may be ed upward while inengagement with sai cross bars, said perforations being shaped so as topermit successive cross bai-s to be passed down over said heads and intoposition without necessitating the removal 55 of said rods.

3. In a mold, the combination of a plumortar over these places.

scenes rality `of mold sections disposed one abov the otherAcrest-pliers exten in thro li thg mold and projecting outwar beyon saidmold sections, vertically disposed rods each adapted to coperate withthe projecting parts cfa vplurality of successive cross-bars so as to hod the mold sections in position, each Aof said rods being ofsubstantially uniform cross section throughout its length and ,adaptedto be slid upwardly while in operajacent to the outer faces ereof rodsextend downwardly through said rforations rom one cross bar to anl erand adapted to hold said mold sections in a substantially verticalositon, heads at the upper ends of said redis, said perforations beingshapediso as to permit succeive cross bars to be passed down over saidheads and into position without neceitating the removal of said rods.

5. In a mold for hollow wall construction, the combination of incidsections for forming the faces o the wall and the sides of the spacetherein, cross bars extending through the wall and projecti beyond themold sections at opposite sides ereof, said cross hars being arrangedone above the other and each having aplertures therein adjacent to eachof said mol sections, and vertically d' rods extending through saidapertures from one cross bar to another for hol said mold sections inposition and adapte to be shifted u ward to permit the lower moldsections to iie removed and replaced above for advancing the mold, saidrods and the apertures in said cross bars being shaped to rmit the crossbars to be sli pcd on and o of the upper ends ofsaid ro while said rodsare in position in the mold.

Signed at Chicago this 22nd day of June,

. JOHN MUELLER. Witnesses:

EUGENE A. Ruisimnn, Manif M. Dimmu.

